Toshiba 6F3B0253 user manual Periodic checks

6F3B0253

9.Maintenance and Checks

9.3Periodic checks

!	CAUTION	1. Pay special attention during the maintenance work to minimize the risk
		of electrical shock.

2.Turn off power immediately if the T1-16S or related equipment is emitting smoke or odor. Operation under such situation can cause fire or electrical shock.

Check the T1-16S based on the following items every six months. Also perform checks when the operating environment is changed.

Item	Check	Criteria
Power supply	Measure the power voltage at the T1-	85 - 132/170 - 264Vac (AC PS)
	16S’s power terminals.	20.4 - 28.8Vdc (DC PS)
	Check that the terminal screw is not	Not loose
	loose.
	Check that the power cable is not	Not damaged
	damaged.
Installation	Check that the unit is installed	Not loose, no play
condition	securely.
	Check that the I/O module is inserted	Not loose, no play
	securely. (if any)
	Check that the expansion rack/unit is	Not loose, no play
	installed securely. (if any)
	Check that the expansion cable is	Not loose, not damaged
	connected securely and the cable is
	not damaged. (if any)
	Check that the I/O module on the	Not loose, no play
	expansion rack is inserted securely. (if
	any)
Input/output	Measure the input/output voltage at	The voltage must be within the
	the T1-16S’s terminals.	specified range.
	Check the input status LEDs.	The LED must light normally.
	Check the output status LEDs.	The LED must light normally.
	Check that the terminal block is	Not loose, no play
	installed securely.
	Check that the terminal screw is not	Not loose, not contacting the
	loose and the terminal has a sufficient	next terminal
	distance to the next terminal.
	Check that the each I/O wire is not	Not damaged
	damaged.

278 T1-16S User’s Manual